If you found a fossilized dinosaur bone, what could be done to accurately determine the age of the fossil?

Question

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Analyzing the isotopes of carbon can provide a relatively accurate estimate of the age of the fossil. Carbon-14 dating is commonly used on organic materials up to 50,000 years old, which can be used to determine the age of the surrounding rock layer where the fossil was found. This can give a rough estimate of the age of the fossil itself. Extracting and sequencing DNA from the bone or looking at pieces of the bone under a microscope would not accurately determine the age of the fossil. Comparing the appearance of the bone to other fossilized bones could provide some clues about the age and species of the animal, but it would not give an accurate estimate of the age of the fossil itself.

If You Found a Fossilized Dinosaur Bone, What Could Be